diff --git a/lab4-IDOR/Dockerfile b/lab4-IDOR/Dockerfile
index f8991c7..e530d3c 100644
--- a/lab4-IDOR/Dockerfile
+++ b/lab4-IDOR/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.22.1
 MAINTAINER Davide Cioccia <d.cioccia@dcodx.com>
 RUN apk update --no-cache && apk add python3 \
 python3-dev \